DOHA Medecins Sans Frontieres (MSF) said it was evacuating its staff from hospitals in northern Yemen on Thursday after a Saudi-led coalition air strike hit a health facility operated by the medical aid group killing 19 people.

"MSF will evacuate staff from 6 hospitals in northern Yemen due to the Saudi-led coalition's indiscriminate bombings and unreliable reassurances," the group said in a statement.